# #3f67f8

A color — cool, vivid, technical, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#3f67f8`
- RGB: rgb(63, 103, 248)
- HSL: hsl(227, 93%, 61%)
- OKLCH: oklch(0.573 0.221 267.1)
- Relative luminance: 0.1753
- Nearest named color: Bluerocratic (#1f66ff, Δ 2.511) — https://brandsweets.com/colors/bluerocratic
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/3f67f8

## Tints & shades

- Tints (toward white): #5377f9, #6282f9, #7592fa, #89a2fb, #9db1fb, #abbdfc, #bfccfd, #d3dcfd, #e1e8fe, #f5f7ff
- Shades (toward black): #2250f7, #093cf6, #0835d9, #072ebb, #0628a2, #052185, #041967, #03124a, #020c31, #010514

## Harmonies

- Complementary: #f8d03f
- Analogous: #3fc4f8, #733ff8
- Triadic: #f83f67, #67f83f
- Split-complementary: #f8733f, #c4f83f
- Tetradic: #f83fc4, #f8d03f, #3ff873

## Colors that go with #3f67f8

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #3f67f8: softer than #000 and cool enough to feel like part of the same palette. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Zoom (https://brandsweets.com/colors/brands/zoom-us), Disney (https://brandsweets.com/colors/brands/disney-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #3f67f8 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), WWE (https://brandsweets.com/colors/brands/wwe-com), Toyota (https://brandsweets.com/colors/brands/toyota-com), Chase (https://brandsweets.com/colors/brands/chase-com). — https://brandsweets.com/colors/crimson
- **Amber** #ffbf00 [pool] — Amber is paired with #3f67f8 in 8 real palettes, including Mastodon hosted on mastodon.social's brand system and Walmart's brand system, as the accent. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Walmart (https://brandsweets.com/colors/brands/walmart-com), NBA (https://brandsweets.com/colors/brands/nba-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 13 real palettes, including MongoDB's brand system and Signal's brand system put Blue beside #3f67f8, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Signal (https://brandsweets.com/colors/brands/signal-org), EA (https://brandsweets.com/colors/brands/ea-com), BBC (https://brandsweets.com/colors/brands/bbc-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #3f67f8: 13 real palettes, including Behance's brand system and Nivea's brand system, as the supporting colour. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), Nivea (https://brandsweets.com/colors/brands/nivea-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #3f67f8: 6 real palettes, including Webflow's brand system and Roblox's brand system, as the accent. Seen in: Webflow (https://brandsweets.com/colors/brands/webflow-com), Roblox (https://brandsweets.com/colors/brands/roblox-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #3f67f8: 7 real palettes, including Elastic's brand system and Calm's brand system, as the supporting colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Calm (https://brandsweets.com/colors/brands/calm-com), Patreon (https://brandsweets.com/colors/brands/patreon-com), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/deepskyblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #3f67f8: 6 real palettes, including Bose's brand system and Nissan's brand system, as the accent. Seen in: Bose (https://brandsweets.com/colors/brands/bose-com), Nissan (https://brandsweets.com/colors/brands/nissanusa-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com), Honda (https://brandsweets.com/colors/brands/honda-com). — https://brandsweets.com/colors/firebrick

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 4.66:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #093cf6 (7.03:1)
- On black (#000000): 4.51:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #7592fa (7.25:1)

## Brands using this color

- **Rotten Tomatoes** — secondary #326af6 (Δ 1.202) — https://brandsweets.com/colors/brands/rottentomatoes-com

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/3f67f8-9ca0c4-df7a4e-221f2d-e9eff1?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#3f67f8" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.